Cylinder And Piston, Dismantling; Piston, Dismantling; Dismantling The Cylinder And Piston - Husqvarna 525P4S Workshop Manual

Place the ignition module in position and fit the
screws. Do not tighten the screws.
Make sure the gap is: 0,3 mm
Tighten the bolts while pressing the ignition
module the flywheel.
Assembly the sparkplug, all covers and the clutch
covers with shaft.
7.19 Dismantling the cylinder and pis-
ton
The cylinder and the piston are two of the components exposed to most strain in the engine. They must
withstand, for example, high speeds, large temperature swings and high pressure. Moreover, they must
be resistant to wear. Despite these tough working conditions, major piston and cylinder failure is relatively
uncommon. The reasons for this include new coatings in the cylinder bore, new types of oil and grease
and refined manufacturing techniques.
When servicing these components, cleanliness is of the utmost importance.
Before dismantling or other actions are performed on the cylinder block it is recommended that a
compression test is made to easily determine whether any faults exist, for example, damaged piston rings
or a damaged piston.
Dismantle the following parts:
All covers and starter
Muffler with gasket
Spark plug
Airfilter and filter holder
Carburattor and remove the insulator with the
attached carburetor.
Heating plate on the top of the cylinder.
Remove the 4 bolts holding the cylinder against
the crankcase.
Repair instructions
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